JPH0623654Y2 - Jig for expanding film - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) This invention relates to the construction of a membrane-forming jig, such as a suspension membrane structure, a skeleton membrane structure or another membrane structure. The present invention relates to a jig for spreading used for spreading work.

(Prior Art) In recent years, the use range of the membrane structure is being expanded by improving the properties such as weather resistance and strength of the membrane body used for constructing the membrane structure.

In the construction of a membrane structure, a membrane-shaped body mainly composed of glass fibers is usually spread between supports such as beams and used as a roof member, for example. Membranes of this type, especially those composed mainly of glass fibers, are liable to be damaged by bending or bending, and therefore, in the work of spreading the membrane, the membrane is wound around the core member more than before. The film roll was previously formed by turning the film roll, and the stretching operation was performed while the film roll was unwound. Hereinafter, a conventional jig for expanding a film body will be schematically described with reference to the drawings.

FIG. 11 is a diagram provided for explaining the spreading jig disclosed in Japanese Utility Model Laid-Open No. 60-61341. In the figure,
Reference numeral 1 denotes a support body composed of a pipe, and 3 denotes an arm slidably fitted on the support body 1. Reference numeral 5 denotes a locking pin for connecting the support 1 and the arm 3, and the conventional spreading jig shown in the figure is mainly composed of the support 1, the arm 3 and the pin 5.

Through holes (not shown) are provided in the support 1 and the arm 3, respectively. Therefore, the support 1 and the arm 3 fit the arm 3 into the support 1 and the pins 5 are inserted in the through holes.
To be connected.

Further, 7 is a core member supported by the arm 3, 9 is a film roll made of a film-like member wound around the core member 7, and 11
Is a wire rope.

When the film-shaped body is stretched, both ends of the core member 7 are supported by the arms 3 and then the support body 1 is attached to the wire rope 11.
Then, the membrane roll 9 is unwound to stretch the membrane-like body between the supports.

Further, FIG. 12 is a diagram for explaining the jig for expanding the film-like body disclosed in Japanese Utility Model Publication No. 60-61342. In the figure, 13 is a support member of a truss structure and 15 is an arm attached to both ends of the support member 13, respectively, and this conventional film-shaped material spreading jig is mainly composed of the support member 13 and the arm 15. There is.

Also in this conventional spreading jig, as in the above-described conventional jig, both ends of the core member 7 are supported by the arms 15 and the support 13 is lifted to rewind the film roll 9.

(Problems to be solved by the invention) However, in the above-described conventional spreading jig, a support is provided between the arms to reinforce the core member, so that the core member is loaded when the film roll is lifted. It was intended to relax the bending stress caused. However, the expanding jig having such a structure has many constituent members, and there is a limit in reducing the total weight of the expanding jig.

On the other hand, the lifting capacity of the crane used to suspend the extension jig is limited to ensure work safety. Therefore, the heavier the extension jig is, the more the membrane-shaped object suspended with the extension jig is supported. It has to be lighter in weight, especially for building-mounted cranes, which have a very low lifting capacity. For this reason, the weight of the film-like body that can be lifted at one time becomes small, and it may be necessary to frequently replace the core member around which the film-like body is wound, resulting in poor work efficiency. There was a point.

Therefore, in order to solve the above-mentioned problems of the conventional spreading jig, the applicants of the present invention have proposed a film-shaped body spreading jig having a structure that can be made lighter than the conventional one.
Hereinafter, one configuration example of the spreading jig proposed by the applicants will be schematically described with reference to the drawings.

The thirteenth is an explanatory view of a jig for expanding a film-like body proposed by the applicants of the present invention, and shows a usage state of the expanding jig.

In the figure, reference numeral 21 designates a rotary shaft and 23 designates a support body, and this spreading jig is composed of a pair of left and right rotary shafts 21 and a support body 23 respectively attached to the left and right ends of the core member. Reference numeral 31 denotes a bearing, and the rotary shaft 21 is rotatably attached to the support body 23 via the bearing 31. Incidentally, reference numeral 33 denotes a locking portion provided on the upper surface of the support body 23.

Reference numeral 35 denotes a core member, and a film roll is formed by winding a film-shaped body around the core member 35, which is not shown. Reference numeral 37 denotes a connecting portion, for example, a through hole formed in the rotary shaft 21, and 39 denotes a hollow cylindrical member having a connecting portion, for example, a through hole. Reference numeral 41 denotes a flange, and the connecting portion 39 is detachably fixed to the left and right ends of the core member 35 via the flange 41.

43 and 45 represent bolts and nuts. In connecting the rotating shaft 21 and the core member 39, the rotating shaft 21 is fitted into the connecting portion 39, and then the bolt 43 is inserted into the through hole of the connecting portion 39 and the connecting portion 39, and then the nut 45 is inserted. The rotary shaft 21 and the core member 35 are connected to each other by assembling the bolt 43.

According to the spreading jig having such a structure, the structure is simpler than that of the conventional spreading jig, and thus the weight can be reduced.

By the way, in the work of spreading the film, the part of the film that has been rewound is blown and fanned, resulting in the film roll being unwound more than necessary, and the weight of the part of the film that has been rewound. The film roll may be unwound more than necessary. Therefore,
One of the applicants of this invention tried to provide a ratchet mechanism on the rotating shaft in an attempt to prevent the film roll from being unwound more than necessary.

However, with this ratchet mechanism, the rotation of the rotating shaft can be stopped to stop the rewinding of the film roll, but the rewinding speed of the film roll cannot be controlled. However, there is a problem in that workability is poor due to wrinkles on the film. Also, when the rewinding of the film roll is stopped to some extent by delaying the timing of the rewinding stop of the film roll and the rewinding of the film roll is stopped, the ratchet mechanism claws may come off depending on the case. There was a problem of disappearing.

An object of the present invention is to solve the above-mentioned problems, and to provide a jig for spreading a film-like body, which can easily and easily control the rewinding speed of the film-roll and thus has good workability.

(Means for Solving Problems) In order to achieve this object, a jig for spreading a film-like body of the present invention is a film-like jig for supporting a film roll formed by winding a film-like body around a core member. In the body stretching jig, a rotating shaft that is detachably connected to both ends of the core member and rotates together with the core member, and a rotating shaft that is provided for at least one rotating shaft of the rotating shaft, And a control device for controlling the rewinding speed via the rotary shaft.

(Operation) According to the film-like member spreading jig having such a configuration, the film-rolling device is unwound to form the film-like member between the supports such as beams while controlling the rewinding speed of the film roll by the control device. Since it can be spread, the workability of the spreading work can be improved.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the drawings are only schematically shown to the extent that the present invention can be understood, and therefore, the shapes, dimensions, and positional relationships of the respective constituents are not limited to the particular shapes, dimensions, and positional relationships shown. .

First Embodiment FIG. 2 is a front view showing the structure of one jig portion of the spreading jig of the first embodiment, and FIG. 3 is a notch cut out along the line III-III in FIG. FIG. The constituents corresponding to those shown in FIG. 13 are designated by the same reference numerals.

2 and 3, reference numeral 21 denotes a rotary shaft, and 23 denotes a support body to which the rotary shaft 21 is rotatably attached.

The structure of the support member 23 does not matter, but in this embodiment, the support member 23
23 is composed of a plate member 25, upper and lower plate members 27 provided on the upper side and the lower side of the plate member 25, and a plate member 29 provided between the upper and lower plate members 27. The upper and lower plate members 27 are provided so as to extend to the front side and the rear side of the plate member 25, respectively, and the plate member 29 is provided on the front side of the plate member 25.

31 indicates a bearing, and in this embodiment, the bearing 31 is a plate member.
It is attached to 25 and 29, and the rotary shaft 21
Are attached to the support 23.

Reference numeral 33 indicates a locking portion, and in this embodiment, for example, a ring-shaped locking portion 81 is provided on the plate member 77 on the upper side.

Further, in FIG. 3, reference numeral 35 denotes a core member that also serves as a reinforcing member, and the rotary shaft 21 is detachably connected to the core member 35 during the expanding work and rotates together with the core member 35. Further, since the core member 35 also serves as a reinforcing member, the strength design of the core member 21 is such that the core member 35 has practically sufficient strength against bending stress applied when the film roll is lifted, To do.

Reference numerals 37 and 39 denote connecting portions for detachably connecting the rotating shaft 21 and the core member 35, respectively. In this example, the rotation axis
One end of 21 is formed hollow, and a connecting member 37 is provided with a through hole, for example, and a connecting member 39 is provided with a cylindrical member having a through hole (not shown), for example. Configure.

Reference numeral 41 denotes a flange. In this embodiment, the flange 41 is provided at the other end of the connecting portion 39 and the end of the core member 35, respectively. Therefore, by connecting these flanges 41 with bolts and nuts (not shown), the connecting portions 39 are detachably provided at both ends of the core member 35.

Reference numerals 43 and 45 denote bolts and nuts, respectively, and in this embodiment, these bolts 43 and nuts 45 are used to form the connecting portion 37.
And 39 are detachably connected, so that the rotating shaft 21 and the core member are connected.
Connect 35. In connecting the rotating shaft 21 and the core member 35, the connecting portion 39 is fitted into one end of the rotating shaft 21, and then the bolt 43 is inserted into the through hole of the connecting portion 39 and the connecting portion 37, and then, The nut 45 is screwed and assembled to the bolt 43, thereby connecting the rotating shaft 21 and the core member 35.

FIG. 1 is a side view showing the configuration of the other jig portion of the expanding jig of the first embodiment. The components corresponding to those shown in FIG. 2 are designated by the same reference numerals,
Detailed description thereof will be omitted.

In the figure, reference numeral 47 indicates a control device, for example, a chain block. In this embodiment, the control device 47 is provided for one of the two rotary shafts 21 connected to both ends of the core member 35.

49 denotes a drive shaft of the control device 47 and 51 denotes a fixing member. In this embodiment, the control device 47 is fixed to the plate member 27 on the upper side via the fixing member 51 and is opposite to the connecting portion 37 of the rotary shaft 21. Provide on the side. Further, the drive shaft 49 is rotatably attached to the plate member 29 via the bearing 31.

53 indicates a gear and 55 indicates a chain. In the illustrated example, the drive shaft
49 and the other end of the rotary shaft 21 are provided with gears 53, respectively.
Power is transmitted between the rotary shaft 21 and the drive shaft 49 via 55.

Further, 57 indicates a chain for driving the drive shaft 49. The control device 47 has this chain 57, so that by operating the chain 57, the drive shaft 49 can be driven.

The chain 57 has a sufficient length to reach the ground when the film roll is lifted, and therefore, the unwinding operation of the film roll can be performed from the ground when the film-shaped body is stretched.

As is well known, the control device (chain block) 47 is a device that has been conventionally used as a lifting and lowering device for heavy objects, and therefore operates the chain 57 with a small force (by hand) to rotate it from the drive shaft 49. Large power can be transmitted to the shaft 21. Moreover, unnecessary rotational force is applied to the rotary shaft 21 due to the load due to the weight of the film-like body in the unwound portion during the spreading operation or the load generated by the wind of the film-like body in the unwound portion. Therefore, from the rotary shaft 21 to the drive shaft
When power is transmitted to 49, the drive shaft 49 does not rotate due to the action of the control device 47, and therefore the rotary shaft 21 also does not rotate.

According to this control device 47, the film roll can be rewound only when the drive shaft 49 is rotated by operating the chain 57,
In addition, the rotating shaft 21 can be prevented from rotating when an unnecessary rotating force is applied to the rotating shaft 21.

FIG. 4 is a view showing a use state of the expanding jig of the first embodiment, and shows a state in which one and the other jig portions of the expanding jig are attached to both ends of the core member.

As shown in the figure, when the film-shaped body is stretched, the rotary shaft 21 of one and the other jig portions is connected by the connecting portions 37 and 39.
Are connected to one end and the other end of the core member 35, respectively.
After that, the wire rope 11 is attached to the locking portion 33, and the support body 23 is lifted by using the wire rope 11 by, for example, a crane. As a result, the core member 35 is hoisted with the one and the other support 23, and thus the membrane roll (not shown). The film roll is rewound while being suspended between the supports such as beams. The film roll is rewound when the drive shaft 49 is rotated by operating the chain 57, but is not rotated when an unnecessary rotational force is applied to the rotary shaft 21, so that the film-shaped member is not supported between the supports such as beams. Safe and easy work to spread out. Moreover, since the film roll can be unwound only when the chain 57 is operated, the film roll is unwound as the film roll moves between the supports, so that the film-like body is not wrinkled between the supports. Easy to unfold.

Further, in this embodiment, one and the other jig portions are attached to both ends of the core member 35, and the core member 35 is used as a reinforcing member, so that the structure is simple as compared with the conventional expanding jig. As a result, it is possible to reduce the weight, and thus it is possible to provide a spreading jig which is lighter than the conventional one.

(Modified Example of Connection of Rotating Shaft and Core Member) FIG. 5 is a cutaway sectional view similar to FIG. 3 showing a modified example of connection of the rotating shaft and core member.

In the figure, reference numeral 46 denotes connecting portions provided at both ends of the core member 35. In this example, both ends of the core member 35 are formed to be hollow, and through holes are provided as connecting portions 46 at both ends of the core member 35.

In connecting the rotating shaft 21 and the core member 35, the core member 21 is fitted into the end of the core member 35, and thereafter, the connecting portion is also provided, though not shown.
After inserting the bolts into the holes 37 and 46, a nut is attached to the bolts, thereby connecting the rotating shaft 21 and the core member 35.

In this way, the rotating shaft 21 and the core member are connected via the connecting portions 37 and 46.
You may connect 35.

(Other Modification of Connection of Rotating Shaft and Core Member) FIG. 6 is a cutaway sectional view similar to FIG. 3 showing another modification of connection of the rotating shaft and core member.

In the figure, reference numerals 75 and 77 denote connecting portions for connecting the rotating shaft 21 and the core member 35. In this example, the connecting portion 75 is configured by a flange provided on each end of the rotary shaft 21, and the connecting portion 77 is configured by a flange provided on each end of the core member 35.

When connecting the rotating shaft 21 and the core member 35, the connecting portion 75 and
77 is fastened with bolts and nuts (not shown), so that the rotary shaft 21 and the core member 35 are detachably connected.

In this way, the rotating shaft 21 and the core member are connected via the connecting portions 75 and 77.
You may connect 35.

Second Embodiment Since the configuration of one jig portion of the spreading jig of this second embodiment is the same as that of one jig portion of the first embodiment, the other one of the spreading jigs of the second embodiment will be described below. Only the jig part will be described.

FIG. 7 is a side view showing the configuration of the other jig portion of the spreading jig of the second embodiment.

In the figure, reference numeral 59 indicates a control device, for example, a worm speed reducer. In this embodiment, the control device 59 is provided for one of the two rotary shafts 21 connected to both ends of the core member 35, and the control device 59 is used as the fixing member.
It is fixed to the plate member 27 on the upper side via 51.

Reference numeral 61 denotes a drive shaft of the control device 59. In this embodiment, the drive shaft 61 is rotatably attached to the support body 23 via bearings 31 provided on the plate members 25 and 29, respectively.

Reference numeral 63 is an operating shaft of the control device 59, 65 is an operating member, and 67 is a rope-like body, and in this embodiment, the wheel-shaped operating member 65 is attached to the operating shaft 63 and together with the rope-like body 67 of a required length. The chain is hooked on the operating member 65, so that the operating shaft 63 can be rotated by operating the rope 67 from the ground when the membrane roll is lifted.

Reference numeral 69 denotes a gear, and in this embodiment, a gear 69 that meshes with the other end of the rotary shaft 21 and the drive shaft 61 is provided, and power is transmitted from the drive shaft 61 to the rotary shaft 21 via the gear 69. .

FIG. 8 is a diagram showing a configuration of a main part of the control device (worm reduction gear) 59, and shows one configuration example of the control device 59.

In the figure, 71 is a worm gear and 73 is a worm. The configuration of the control device (worm reduction device) 59 is not limited, but in this embodiment, the worm gear 71 is provided on the drive shaft 61 and the worm 73 is provided on the operation shaft 63. The worm gear 71 and the worm 73 are provided so as to mesh with each other. Therefore, when the drive shaft 63 is rotated by operating the rope 67, the drive shaft 61 also rotates, and therefore the drive shaft 61 rotates from the drive shaft 61 via the gear 61. Power can be transmitted to the shaft 21.

Also in this control device 59, like the control device 47 of the first embodiment, the film roll can be rewound only when the chain 57 is operated to rotate the drive shaft 49, and the rotation shaft 21 is not required. The rotating shaft 21 can be prevented from rotating when a rotating force is applied.

According to the second embodiment as well, similar to the first embodiment, the film-like body can be unrolled between the supports such as beams safely and easily without wrinkling, and is lighter than the conventional one. A jig can be provided.

Third Embodiment Since the configuration of one jig portion of the spreading jig of the third embodiment is the same as that of one jig portion of the first embodiment, the other one of the spreading jigs of the third embodiment will be described below. Only the jig part will be described.

FIG. 9 is a side view showing the configuration of one jig portion of the third embodiment.

In the figure, 79 is a control device such as a disc brake device, and 81 and 83 are fixing members for fixing the control device 79 to the support 23. In this embodiment, the fixing member 81 is
The support member 23 is provided between the upper and lower plate members 27 on the rear surface side, the fixing member 83 is provided so as to extend from the fixing member 81 to the rear surface side of the support member 23, and the control device 79 is installed on the fixing member 83. .

Reference numeral 85 denotes a transmission shaft for transmitting power between the control device 71 and the rotary shaft 21. In this embodiment, the transmission shaft 85 is rotatably attached to the support body 23 via the bearings 31 provided on the plate members 25 and 27, and one end side of the transmission shaft 85 is connected to the control device 79.

87 indicates a gear. In this embodiment, the other end of the transmission shaft 85 and one end of the rotary shaft 21 are extended to the front side of the support body 23, and gears 87 are attached to these extended ends. These gears 87 are mounted so as to mesh with each other, so that by controlling the rotation speed of the transmission shaft 85 by the control device 79, the rotation speed of the rotation shaft 21 is also controlled.

Reference numeral 89 denotes an operation member provided in the control device 79. In this embodiment, the operation control of the control device 79 is performed by rotating the operation member 89, for example.

Reference numeral 91 denotes a rope, for example, a chain. In this embodiment, the rope 91 having a required length is hooked on the operation member 89, and the operation of the control device 79 can be controlled from the ground when the rope 91 is extended. I am trying.

FIG. 10 is a diagram schematically showing the configuration of the control device of the third embodiment.

The control device 79 of this embodiment mainly comprises a brake disc (hereinafter referred to as a disc) 93, a brake lining plate (hereinafter referred to as a lining plate) 95, a piston 97, a hydraulic cylinder 99, and an operation control unit 101.

The operation control unit 53 changes the hydraulic pressure of the hydraulic cylinder 99 according to, for example, the rotational movement of the operating member 83, and the piston 97 is displaced according to the change of the hydraulic pressure. The lining plate 95 displaces and follows the displacement movement of the piston 97, so that a contact state or a non-contact state of the disc 93 and the lining plate 95 is formed.

Since the disc 93 is fixed to the transmission shaft 85, the rotational speed of the rotating transmission shaft 85 can be controlled by the frictional force generated between the disc 45 and the lining plate 47 in contact with each other.

The third embodiment is slightly less effective than the first and second embodiments described above, but in this third embodiment as well, wrinkles are formed safely and easily between the support members such as the beams. Therefore, it is possible to provide a jig for spreading which is lighter than the conventional one.

The present invention is not limited to the above-mentioned embodiments, and therefore, for example, the diameter and shape of the rotating shaft, the shapes of the support and the core member, the position of the bearing, the connecting method and means of the rotating shaft and the core member, The configuration of the control device and other design conditions can be arbitrarily changed.

For example, the control device is not limited to the above-described embodiment, and for example, the control device may be configured by a reduction gear device or a drum brake device, and the control device may further include a reduction gear device (for example, worm reduction gear). (Device) and a control device including an electric motor. When the control device is composed of the reduction gear device and the electric motor, the switch for operating the stop and operation of the electric motor and the control device are electrically connected by using the electric wire of the required length, and thus from the ground. It is good to be able to operate the electric motor remotely. Further, the control device may be provided on both of the rotary shafts attached to both ends of the core member.

Further, power transmission between the rotary shaft and the control device may be performed via a plurality of shafts and / or gears, or the control device may be directly attached to the rotary shaft.

The structure of the support is not limited as long as the rotary shaft can be attached rotatably. In the above-described embodiment, the rotating shaft is supported by the individual supports to form the one and the other jig portions, but the supports may be integrated.

As long as the control device can be provided for at least one of the rotating shafts, the structure of the support, the rotating shaft, the core member and other constituent components does not matter.

(Effect of the Invention) As is apparent from the above description, according to the film-shaped material spreading jig of the present invention, the work of spreading the film-shaped material between the supports and expanding the film-shaped material can be performed at a rewinding speed of the film roll. Since it can be performed while being controlled by the control device, the work of spreading the film-like body between the supports such as beams can be performed safely and easily.

Moreover, since the work of spreading the film-shaped material between the supports and expanding it can be performed while controlling the rewinding speed of the film roll by the control device, the film-shaped material should be spread and expanded between the supports so as not to wrinkle. Therefore, the work of spreading the film-like body is very easy, so that the workability can be improved.

[Brief description of drawings]

FIG. 1 is a front view of the other jig part of the jig for expanding a film-like body of the first embodiment, and FIG. 2 is a front view of one jig part of the jig for expanding a film-like body of the first embodiment. Fig. 3 is a cut-away cross-sectional view of one jig portion of the film-shaped material spreading jig of the first embodiment, and Fig. 4 is a usage state of the film-shaped material spreading jig of the first embodiment. FIG. 5, FIG. 5 is a diagram for explaining a modification of the connection of the core member and the rotary shaft, FIG. 6 is a diagram for explaining another modification of the connection of the core member and the rotary shaft, and FIG. FIG. 8 is a side view of the other jig portion of the jig for expanding the membrane-like body of the second embodiment, FIG. 8 is a diagram for explaining the control device of the second embodiment, and FIG. 9 is a membrane-like body of the third embodiment. FIG. 10 is a side view of one jig portion of the spreading jig, FIG. 10 is a diagram for explaining the control device of the third embodiment, FIG. 11 is a diagram for explaining a conventional stretching jig, and FIG. Is an explanation of another example of conventional spreading jig Diagram provided, FIG. 13 is a diagram for explaining a deployed jig proposed by applicants of this invention. 21 ... Rotating shaft, 23 ... Support 35 ... Core member, 37, 39, 46, 75, 77 ... Coupling part 47, 59, 79 ... Control device.

Claims (1)

[Scope of utility model registration request] 1. A film expanding jig for supporting a film roll formed by winding a film around a core member, which is detachably connected to both ends of the core member and rotates together with the core member. A rotary shaft, and at least one rotary shaft of the rotary shaft,
A jig for expanding a film-like body, comprising: a control device for controlling the rewinding speed of the film roll during expansion via the rotating shaft.